Lo mgodi uphantsi kwecandelo le-volcanic provenance deposits kuhlobo lwe-continental lacustrine sedimentary diatomite. Yidiphozithi enkulu eyaziwayo eTshayina, kwaye isikali sayo sinqabile kwihlabathi. I-diatomite layer iyatshintshana kunye nodongwe kunye ne-silt layer. Icandelo le-geological lifumaneka kwixesha eliphakathi phakathi kwe-basalt eruption rhythm. I-stratum yendawo yemigodi iboniswe kwitheyibhile engezantsi.
Ukuhanjiswa kwendawo yeediphozithi kulawulwa yipatheni ye-paleo-tectonic. Udakumba olukhulu lwembonakalo-mhlaba yentaba-mlilo lwenzeka emva kwenani elikhulu logqabhuko-mlilo kwi-Himalaya lunike indawo yokubeka iidiatom. Iinxalenye ezahlukeneyo zesitya samandulo kunye ne-topography engaphantsi kwamanzi kwi-basin yechibi ilawula ngokuthe ngqo ukuhanjiswa kweediphozithi. Indawo eseludinini yesitya iphazanyiswe yimilambo kwaye imeko yentlenga ayizinzanga, engabangeli ncedo ekusindeni nasekuqokeleleni iidiatom. Embindini wesitya, ngenxa yamanzi anzulu kunye nokukhanya kwelanga okungonelanga, ayihambisani ne-photosynthesis efunekayo ukuze kuphile iidiatom. Ukukhanya kwelanga, indawo ye-sedimentary kunye nomxholo we-SiO2 kwindawo yokutshintsha phakathi kweziko kunye nomda zonke zilungele ukusasaza kunye nokuqokelela kwee-diatoms, ezinokuthi zenze imizimba ye-ore ephezulu yoshishino.
Uluhlu lwamatye olunentsimbi ekrwada yiMa'anshan Formation sedimentary layer, enendawo yosasazo eyi-4.2km2 kunye nobukhulu be-1.36～57.58m. Umaleko we-ore wenzeka kuthotho lwamatye anentsimbi ekrwada, onesingqisho esicacileyo kwicala elithe nkqo. Ulandelelwano lwesingqisho olupheleleyo ukusuka ezantsi ukuya phezulu lu: udongwe lwediatom → idatomite yodongwe → idiatomite enodongwe → idatomite → idatom enodongwe Umhlaba → udongwe idatomite → udongwe lwediatom, kukho ubudlelwane phakathi kwabo. Umbindi wesingqisho unomxholo ophezulu weediatom, iileya ezininzi ezingatshatanga, ubukhulu obukhulu, kunye nomxholo ophantsi wodongwe; umxholo wodongwe wezingqisho eziphezulu kunye nezantsi ziyancipha. Kukho iileya ezintathu kumbindi we-ore layer. Uluhlu olungaphantsi luyi-0.88-5.67m ubukhulu, kunye nomyinge we-2.83m; umaleko wesibini yi-1.20-14.71m ubukhulu, kunye nomyinge we-6.9m; umaleko ophezulu ngumaleko wesithathu, ongazinzanga, kunye nobukhulu be-0.7-4.5m.
Icandelo eliphambili leminerali ye-ore yi-diatom opal, inxalenye encinci ephinda ihlaziye kwaye iguqule ibe yi-chalcedony. Kukho inani elincinci lokuzaliswa kodongwe phakathi kweediatom. Udongwe ubukhulu becala hydromica, kodwa kaolinite kwaye illite. Iqulethe ixabiso elincinci leeminerali ezinobungozi ezifana ne-quartz, i-feldspar, i-biotite kunye ne-siderite. Iinkozo zequartz zidliwe. I-Biotite iguqulwe yaba yi-vermiculite kunye ne-chlorite. Ukubunjwa kweekhemikhali ze-ore kubandakanya i-SiO2 73.1% -90.86%, Fe2O3 1% -5%, Al2O3 2.30% -6.67%, CaO 0.67% -1.36%, kunye nokulahlekelwa kwe-3.58% -8.31%. Iintlobo ze-22 ze-diatoms zifunyenwe kwindawo yemigodi, ngaphezu kweentlobo ze-68, ezona zibalaseleyo yi-discoid Cyclotella kunye ne-Cylindrical Melosira, i-Mastella kunye ne-Navicula, kunye ne-Corynedia ngokomyalelo we-Polegrass. I-Genus nayo ixhaphakile. Okwesibini, kukho i-genus Oviparous, Curvularia njalo njalo.
Ixesha lokuposa: Jun-17-2021